Oosthuizen confronted by long-lost brother, or at least guy who resembles

NORTON, Mass. -- Louis Oosthuizen stepped onto the ninth tee at the Deutsche Bank Championship on Monday and heard a fan screaming from the front of the box.

"LOUIS! LOUIS! I'M YOUR BROTHER! YOUR LONG, LOST BROTHER!"

The fan had a slight gap in his front teeth, was wearing a cap and was very, very loud -- so loud that Oosthuizen couldn't ignore him. He turned to look and broke into a gap-tooth smile, and was laughing so hard he covered his face with his yardage book. 
So, was he a real lookalike?

"My caddie said he looked just like me, so I don't know," Oosthuizen said.

Rory McIlroy sided with the caddie.

"He did have the gap in the teeth, which I thought was so funny," McIlroy said. "He was following us the whole way around. I thought there were a few similarities there."

Except for the golf. Oosthuizen has a swing that is the envy of the PGA Tour.